Tool for compressing and inserting valve springs



March 4 1924,

. 11,485,59 J. CARRICART TOOL FOR COMPRESSING AND INSERTING VALVE SPRINGS m j I; a

Filed Dec. '9, 1920 INVENTOR. KMM/ 17 Patented i,

dlllsll l CARBECATJT, 01 SANTA BARBARA, CALIFQRNIA.

'TQQL F035 fiOIvZERESSING AND INSERIKING VALVE SPEHNGvd.

Applicaticn filed December 9, 19%.

To all whom it may concern:

Be it known that l, JorrN 'CARRICART, a

citizen of the United States, and a resident vented certain new and useful Improvements in Tools for Compressing and lnserting Valve Springs, of which the following is a specification.

10 This invention relates to a tool which is constructed for compressing springs and by the use oi which the springs thus com pressed can be removed in compressed condition from the compressingmeans and in- 1 sorted in the places in which they are to function. For example, it the springs are those employed in closing engine valves, the tool is of service in inserting the compressed springs in place in the engine, Springs having as high' an expansive pres sure as ninety pounds are at present employed for closing the valves of many of the larger types or" automobile engines and, though it is not so dificult a matter to re- 2 move the springs, the replacing of the springs of the larger engines in their lunctioning positions is at present so dificult and troublesome that the valves of such engines are usually ground with the springs 1) in place instead of with the springs removed, as is preferable An object of the invention is to produce a tool or" this character of comparatively simple construction and one that is easily operas atedi Another object is to so construct the tool that the spring transferring member can be readily placed upon the spring in the compressing means and, upon release of the as spring by the compressing means,- can be easily removed holding the spring in its r- The accompanying drawings illustrate the invention: an lFi are l is a side view of a'tool embodying t e invention, a spring being shown in compressed condition in the tool;

Figure 2 is a sectional elevation on line indicated by m m Figure l;

Figure 3 is a lan section on line'indicated by m m igure 1;

Figure 4 is a plan view of Fl ure 1; and

Figure 5 is a perspective view of the spring transferring, member, showing it I holding a compressed spring ready for in- Elli Serial No. 429,361.

sertion of the spring in the position in which it functions. a e i There are provided a stationary l and a movable jaw 2, the movable jaw being moved toward and from the stationary jaw by suitable means such as a screw 3 that adjustably engages a lug 4c forming one end of the tool body 5. The jaw 1 forms the opposite end of the body 5. lhe body 5 may be of any desired shape, and in the present instance is channelor V-shape, as clearly shown in Figure 3, and the jaw 2 has a V-shaped portion 6 adapted to slidably it the channel. lhe unthreaded portion 7 of the screw 3 rotates in the jaw 2 when the to screw is turned. The screwfi is provided with a handle 8 whereby it may be readily turned by the operator to advance or retract the jaw 2. i v

The spring to be compressed is placed between the jaws 1, 2, when the jaw 2 is in its retracted position adjacent the lug 4. Such a spring is indicated at A in the drawings in the compressed condition, since the screw 3 has been rotated to move the jaw 2 toward the jaw in fifhen the spring A has thus been 'compressed, a spring-transferring member 9 is adapted to be placed on the spring A. Tha springinserting member comprises a U- shape handle 10 and gripping members, each or which in turn comprises arms 11 extend-= ing normal to the plane of the handle it) and jaws 12 at opposite ends or the arms-ll.

Preferably the handle 10 is more or less resilient so as to yieldingly hold the arms it toward each other. In practice, the spring will be compressed so that it is slightly shorter than the distance between the o posed jaws 12 of the arms ll, preferab y until adjacent coils touch each other, and then the spring transferring member will he slipped over the ends of the spring so that a line passing through the jaws 12-01? the opposed arms will pass through the axis or the spring. Uwing to the resilient character oil the handle 10 the arms 11 will be clamped against the opposite sides of the spring, so that the spring-transferring member will be retained in position without the operator holding it. When the spring-transferring member has been thus positioned, the operatorwill turn the screw ghso as to retract til? "aw 2, thus permitting t e s ring to expann guciently to cage the aws l2 and be a loose between the jaws 1, 2. The operator will then grasp the handle and withdraw the spring, by the aid thereof, from between the jaws l, 2. The spring-transferring member, with the compressed spring held thereby, is clearly shown in Figure 5 of the drawings. The operator may now place the spring in'position between the valve stem head and the spring seat of an engine,-or in any other position that the spring belongs.

lit is to be noted that the jaws 1,2, are provided with portions 13 of less width than the distance between the jaws 12 of the opposed arms 11, thus enabling the spring-transferrin member to be placed accurately on the spring so that flexure of the spring, and consequent escape of the spring therefrom, cannot occur. Difierent sizes of spring-transterring members will be manufactured for difierent sizes of springs, in order that the jaws 12 may be properly spaced for receiving the spring when the spring has been compressed to its maximum, and tohold said spring in substantially its maximum contracted. position, thus minimizing the tendency of the spring to flex and escape from the springtransferring member in transferring the spring from betweenthe jaws 1, 2, to its functioning position in the engine or elsewhere.

I claim:

1. In a tool of the character described, the combination of spring-compressing jaws, means to move onset the jaws toward the other to compress a spring therebetween,

masses other to compress a spring therebetween,

and a spring-transferring member having opposed arms each provided with jaws to engage the opposite ends of the spring, and a U-shape spring member connecting the arms to each other.

3. In a tool of the character described, opposed arms each having jaws to engage the opposite ends of a spring, and a spring member connecting the arms to each other.

tilin a tool of the character described, the combination of a tool body having a jaw at one end and a'lug at its opposite end, a screw adjustably engaging the lug, a second jaw slidably engaging the body and loosely mounted on the screw, and a spring-transferring member having opposite arms provided with jaws to engage the opposite ends of a spring compressed between the first and second jaws.

Signed at Santa Barbara, California, this 2d day of December, 1920.

JOHN CARRICART." Witnesses:

. VrReIL O. WAYMAN,

F, K. Tonenson. 

